diff --git a/os/hal/platforms/STM32F4xx/hal_lld.h b/os/hal/platforms/STM32F4xx/hal_lld.h
index 3723f6e61..09eaafd82 100644
--- a/os/hal/platforms/STM32F4xx/hal_lld.h
+++ b/os/hal/platforms/STM32F4xx/hal_lld.h
@@ -1437,16 +1437,6 @@
 #error "invalid STM32_RTCSEL value specified"
 #endif
 
-/**
- * @brief   RTC HSE divider setting.
- */
-#if ((STM32_RTCPRE_VALUE >= 2) && (STM32_RTCPRE_VALUE <= 31)) ||            \
-    defined(__DOXYGEN__)
-#define STM32_RTCPRE                (STM32_RTCPRE_VALUE << 16)
-#else
-#error "invalid STM32_RTCPRE value specified"
-#endif
-
 /**
  * @brief   48MHz frequency.
  */
diff --git a/readme.txt b/readme.txt
index c1c5b57bf..fc5e8d493 100644
--- a/readme.txt
+++ b/readme.txt
@@ -82,6 +82,7 @@
 *****************************************************************************
 
 *** 2.5.2 ***
+- FIX: Fixed duplicated code in hal_lld.h (STM32F4xx) (bug 3602544).
 - FIX: Fixed #define typo in usb_lld.h (OTGv1) (bug 3602306).
 - FIX: Fixed STM32F0 RCC enable/disable/reset functions for CRC and WWDG
   (bug 3602150).